private static void OnPositionEstimateChanged(object sender, PositionEstimateEventArgs pea)
 {
     if (OnPositionEstimateChange != null) //any listeners?
     {
         OnPositionEstimateChange(sender, pea);
     }
 }
 private static void OnPositionEstimateChanged(object sender, PositionEstimateEventArgs pea)
 {
     if (OnPositionEstimateChange != null) //any listeners?
     {
         OnPositionEstimateChange(sender, pea);
     }
 }